The BGS Lexicon of Named Rock Units — Result Details

Yat Wood Formation

Computer Code: YAWO Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Pale green laminated or massive siltstones, thinly laminated mudstones and fine-grained, generally massive, sandstones.
Definition of Lower Boundary: Unknown, contacts generally faulted.
Definition of Upper Boundary: Unknown in detail; unconformably overlain by the Dolyhir Limestone of Wenlock age.
Thickness: Unknown - generally faulted contacts.
Geographical Limits: Welsh borderlands. Old Radnor.
Parent Unit: Stretton Group (YST)
Previous Name(s): Yat Wood Formation [Obsolete Code: Use YAWO] (YTW)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Main part of the active Doylhir Quarry. Woodcock, N H and Pauley, J C. 1989. 
Partial Type Section  Southern part of Gore Quarry. Woodcock, N H and Pauley, J C. 1989. 
Reference(s):
Woodcock, N H and Pauley, J C. 1989. The Longmyndian rocks of the Old Radnor Inlier, Welsh Borderland. Geological Journal, Vol.24, 113-120. 
Woodcock, N H. 2000. Dolyhir and Strinds Quarries. 114-118 in Carney, J N (editor), Precambrian rocks of England and Wales. Geological Conservation Review Series No 20. [Peterborough: Joint Nature Conservation Committee.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable